IT14G Integrated Toolcarrier and 914G Wheel Loader Power Train Caterpillar

Assembly Procedure

Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.

Note: Before assembly, measure the end play gap at both side gears independently. Steps 1 through 7 from disassembly cover the procedure for measuring end play gap.

Note: Two new shim packs will be needed to properly adjust the end play gap. Each new shim pack consists of two shims 0.46 mm (0.018 inch), two shims 0.38 mm (0.015 inch), two shims 0.33 mm (0.013 inch), and two shims 0.25 mm (0.098 inch).

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Illustration 1	g00491294

1. Use clean axle oil to thoroughly lubricate plates (22), friction discs (21), and spacer (20) .

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Illustration 2	g00491115

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Illustration 3	g00491325

2. Install disc pack (19) in alternate order in the differential case. Start with a plate and end with a plate.

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Illustration 4	g00491114

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Illustration 5	g00491327

3. Install spacer (18) in the differential case.

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Illustration 6	g00491111

4. Install new shim pack (17) from side gear (16) .

   Note: Apply a small amount of grease to the shims prior to installation. This will retain the shims in place when the gear is installed.

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Illustration 7	g00491110

5. Invert side gear (16) and install the side gear into the differential case, as shown.

   Note: Turn side gear slowly until the spline engages with the spacer and five friction discs.

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Illustration 8	g00491104

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Illustration 9	g00491102

6. Install connector (15), four pinion gears (13), and four thrust washers (14) in the differential case.

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Illustration 10	g00491101

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Illustration 11	g00491099

7. Lubricate pinion shaft (12) and (11) with clean axle oil.

8. Align the pinion gears, the thrust washers, and the pinion shaft bores into the differential case. Install pinion shafts (12) and (11).

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Illustration 12	g00491425

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Illustration 13	g00491097

9. Install three dowel pins (10) in the differential case. Anchor pinion shafts (11) and (12) .

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Illustration 14	g00491428

10. Use clean axle oil to thoroughly lubricate plates (9), friction discs (8), and spacer (7) prior to assembly.

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Illustration 15	g00491430

11. Place bevel gear (6) on the table. Turn the bevel gear so that the face is up, as shown.

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Illustration 16	g00491432

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Illustration 17	g00491435

12. Install disc pack (5) in alternate order in the bevel gear. Start with a plate and end with a plate.

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Illustration 18	g00491438

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Illustration 19	g00491461

13. Install spacer (7) in the bevel gear.

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Illustration 20	g00491472

14. Install a new shim pack (17) of the same thickness from step 22 of the disassembly on side gear (16) .

    Note: Apply a small amount of grease to the shims prior to installation. This will retain the shims in place when the side gear is installed.

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Illustration 21	g00491473

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Illustration 22	g00491475

15. Invert side gear (16). Install side gear (16) into the bevel gear, as shown.

    Note: Turn side gear (16) slowly until the spline engages with the spacer and all five friction discs.

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Illustration 23	g00491488

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Illustration 24	g00491486

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Illustration 25	g00491489

16. Install Tooling (C) on bevel gear (2) and side gear (16), as shown. This will retain the side gear, the shims, the spacer, and the disc pack in the bevel gear. Install the bevel gear on the differential case.

    Note: The clamping segment of Tooling (C) must not protrude past the face of side gear (16) .

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Illustration 26	g00491494

17. Install bevel gear (2) into differential case (3) .

18. Install twelve bolts (1) .

19. Tighten bolts (1) evenly until bevel gear (2) is seated on differential case (3) .

20. Remove the nut and the cap of Tooling (C) .

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Illustration 27	g00491495

21. Loosen up the clamping segment of Tooling (C). Remove Tooling (C) from the differential assembly.

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Illustration 28	g00491498

22. Tighten twelve bolts (1) to a torque of 300 ± 40 N·m (220 ± 30 lb ft).

    Note: Steps 25 through 34 are for measuring the end play gap.

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Illustration 29	g00491560

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Illustration 30	g00491561

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Illustration 31	g00491562

23. Place the differential assembly in the vise.

24. Install Tooling (A) into the axle shaft boreof the differential assembly. Tooling (A) must pass through the side gear.

25. Tighten the nut of Tooling (A) enough to lock the tool on the internal shoulder of the side gear. The lever of Tooling (A) must be free to move after the nut is tightened.

26. Mount Tooling (B) on the differential assembly, as shown. Zero the dial indicator of Tooling (B) on Tooling (A) .

27. Apply 40 N·m (30 lb ft) of torque to Tooling (A). The dial indicator reading is the measured end play gap at the side gear for the side opposite the bevel gear.

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Illustration 32	g00491564

28. Repeat steps 23 through 27. Measure the end play gap at the side gear for the adjacent side of the bevel gear.

29. Record measurements of the end play gap from side by side of the differential assembly.

30. The measurement of the end play gap must fall between 0.05 mm (0.002 inch) and 0.15 mm (0.006 inch) in order to meet specifications.

31. If the measurement of the end play gap is greater than 0.15 mm (0.006 inch) disassemble the differential assembly. Add the necessary shims in order to meet specifications.

32. If the measurement of the end play gap is less than 0.05 mm (0.002 inch) disassemble the differential assembly. Remove the necessary shims in order to meet specifications.

End By: Install the differential. Refer to Disassembly and Assembly, "Differential Axle - Remove and Install".